properties.m revision 9319b56154cfd9e3c781e54d2ee1c10c5858efed 
1// RUN: %clang_cc1 -analyze -analyzer-check-objc-mem -analyzer-store=region -verify %s
2
3typedef signed char BOOL;
4typedef unsigned int NSUInteger;
5typedef struct _NSZone NSZone;
6@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
7@protocol NSObject  - (BOOL)isEqual:(id)object; @end
8@protocol NSCopying  - (id)copyWithZone:(NSZone *)zone; @end
9@protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder; @end
10@protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone; @end
11@interface NSObject <NSObject> {}
12+(id)alloc;
13-(id)init;
14-(id)autorelease;
15-(id)copy;
16-(id)retain;
17@end
18@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>
19- (NSUInteger)length;
20-(id)initWithFormat:(NSString *)f,...;
21-(BOOL)isEqualToString:(NSString *)s;
22+ (id)string;
23@end
24@interface NSNumber : NSObject {}
25+(id)alloc;
26-(id)initWithInteger:(int)i;
27@end
28
29// rdar://6946338
30
31@interface Test1 : NSObject {
32  NSString *text;
33}
34-(id)myMethod;
35@property (nonatomic, assign) NSString *text;
36@end
37
38
39@implementation Test1
40
41@synthesize text;
42
43-(id)myMethod {
44  Test1 *cell = [[[Test1 alloc] init] autorelease];
45
46  NSString *string1 = [[NSString alloc] initWithFormat:@"test %f", 0.0]; // expected-warning {{Potential leak}}
47  cell.text = string1;
48
49  return cell;
50}
51
52@end
53
54
55// rdar://8824416
56
57@interface MyNumber : NSObject
58{
59  NSNumber* _myNumber;
60}
61
62- (id)initWithNumber:(NSNumber *)number;
63
64@property (nonatomic, readonly) NSNumber* myNumber;
65@property (nonatomic, readonly) NSNumber* newMyNumber;
66
67@end
68
69@implementation MyNumber
70@synthesize myNumber=_myNumber;
71 
72- (id)initWithNumber:(NSNumber *)number
73{
74  self = [super init];
75  
76  if ( self )
77  {
78    _myNumber = [number copy];
79  }
80  
81  return self;
82}
83
84- (NSNumber*)newMyNumber
85{
86  if ( _myNumber )
87    return [_myNumber retain];
88  
89  return [[NSNumber alloc] initWithInteger:1];
90}
91
92- (id)valueForUndefinedKey:(NSString*)key
93{
94  id value = 0;
95  
96  if ([key isEqualToString:@"MyIvarNumberAsPropertyOverReleased"])
97    value = self.myNumber; // _myNumber will be over released, since the value returned from self.myNumber is not retained.
98  else if ([key isEqualToString:@"MyIvarNumberAsPropertyOk"])
99    value = [self.myNumber retain]; // this line fixes the over release
100  else if ([key isEqualToString:@"MyIvarNumberAsNewMyNumber"])
101    value = self.newMyNumber; // this one is ok, since value is returned retained
102  else 
103    value = [[NSNumber alloc] initWithInteger:0];
104  
105  return [value autorelease]; // expected-warning {{Object sent -autorelease too many times}}
106}
107
108@end
109
110NSNumber* numberFromMyNumberProperty(MyNumber* aMyNumber)
111{
112  NSNumber* result = aMyNumber.myNumber;
113    
114  return [result autorelease]; // expected-warning {{Object sent -autorelease too many times}}
115}
116
117
118// rdar://6611873
119
120@interface Person : NSObject {
121  NSString *_name;
122}
123@property (retain) NSString * name;
124@end
125
126@implementation Person
127@synthesize name = _name;
128@end
129
130void rdar6611873() {
131  Person *p = [[[Person alloc] init] autorelease];
132  
133  p.name = [[NSString string] retain]; // expected-warning {{leak}}
134  p.name = [[NSString alloc] init]; // expected-warning {{leak}}
135}
136
137@interface SubPerson : Person
138-(NSString *)foo;
139@end
140
141@implementation SubPerson
142-(NSString *)foo {
143  return super.name;
144}
145@end
146